Committed the generated OpenAPI sources instead of using the plugin.

Tools/Package.swift

@@ -0,0 +1,28 @@
+// swift-tools-version: 5.10
+
+// ===----------------------------------------------------------------------===
+//
+// This source file is part of the ASConnectService open source project
+//
+// Copyright (c) 2026 Röck+Cöde VoF. and the ASConnectService project authors
+// Licensed under Apache license v2.0
+//
+// See LICENSE for license information
+// See CONTRIBUTORS for the list of ASConnectService project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// ===----------------------------------------------------------------------===
+
+import PackageDescription
+
+// Development tools, kept out of the main package so consumers don't resolve them.
+let package = Package(
+    name: "asconnect-service-tools",
+    platforms: [
+        .macOS(.v10_15)
+    ],
+    dependencies: [
+        .package(url: "https://github.com/apple/swift-openapi-generator.git", exact: "1.11.0")
+    ]
+)